drm/amd/display: Compare clock state member to determine optimization.

[Why]
It seems always request passive flip on RN due to incorrect compare
clock state to determine optization.

[How]
Instead of calling memcmp, compare clock state member to determine the
condition.

Signed-off-by: Yongqiang Sun <yongqiang.sun@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Leo Li <sunpeng.li@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn21/rn_clk_mgr.c b/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn21/rn_clk_mgr.c
index 37230d3..de51ef1 100644 (file)
--- a/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn21/rn_clk_mgr.c
+++ b/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn21/rn_clk_mgr.c
@@ -471,12 +471,28 @@ static void rn_notify_wm_ranges(struct clk_mgr *clk_mgr_base)
 
 }
 
+static bool rn_are_clock_states_equal(struct dc_clocks *a,
+               struct dc_clocks *b)
+{
+       if (a->dispclk_khz != b->dispclk_khz)
+               return false;
+       else if (a->dppclk_khz != b->dppclk_khz)
+               return false;
+       else if (a->dcfclk_khz != b->dcfclk_khz)
+               return false;
+       else if (a->dcfclk_deep_sleep_khz != b->dcfclk_deep_sleep_khz)
+               return false;
+
+       return true;
+}
+
+
 static struct clk_mgr_funcs dcn21_funcs = {
        .get_dp_ref_clk_frequency = dce12_get_dp_ref_freq_khz,
        .update_clocks = rn_update_clocks,
        .init_clocks = rn_init_clocks,
        .enable_pme_wa = rn_enable_pme_wa,
-       /* .dump_clk_registers = rn_dump_clk_registers, */
+       .are_clock_states_equal = rn_are_clock_states_equal,
        .notify_wm_ranges = rn_notify_wm_ranges
 };